//枚举类、记录类
enum eWeekday {
    SUN, MON, TUE, WED, THU, FRI, SAT;
}
public class Main {
    public static void main(String[] args) {
        int day=5;
        if (day == Weekday.SAT || day == Weekday.SUN) {
            // TODO: work at home
            System.out.println("wk");
        }
    }
}